Last week I wrote about the impact Teach For America corps members have on student learning, noting that the evidence is largely positive. The second part of Teach For America’s theory of change—which states that alumni will become leaders in the movement to end educational inequity—is equally important. Teach For America has always thought about this two-part theory of change as a balancing act, investing in measuring immediate progress within the classroom alongside how many alumni are active as education leaders. But this second metric is much more difficult to measure.
In light of how quickly Teach For America has grown, understanding how the organization measures alumni impact takes on even greater importance. As of 2014 there were over 37,000 alumni, or more than three times the number of corps members.